DThe twelve stars of the European Union, located around the outer circle of the coin, and the year of issue "2004", located at the bottom center, surround the bust of Bartolomeo Borghesi. To the left of the bust is the inscription "Bartolomeo Borghesi", and one above the other is the letter "R" and the engraver's initials "ELF". To the right of the bust is the word "San Marino".